I managed to avoid the Boomer artillery fire and speak with their leader. They promised not to fire on me any more, and I already performed a quest for them and have a reputation of "accepted" with the Boomers.

They still fire on me if I come near the Nellis gate or the area in front of it. They don't mind killing their own people in the process.

I don't want to reload and redo the quest for them again, is there any way of circumventing that bug, e.g. via some console commands?

Odd, that bug is listed as XBox/PS3 only. You might want to head over to the Wiki and update it to confirm on PC. Since it's not listed there for PC, at this stage it's unknown if a console command might fix it. :(
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John RudyNov 14 '10 at 22:08

1

As Far as i know, the Boomers "always" shoot on everything living that comes near them! The only Exception is when you wear a boomer-outfit, then they won't harm you.. correct me if iam wrong.
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IceagNov 24 '10 at 13:35